Free Reaction Timer iPhone App: The sprintStart

Here is a new little app that might interest sprinters who wants to improve their reaction time.

It is called sprintStart and it lets you practice and improve your reaction time.

It is fairly simple to use: Tap "Start" and put the iPhone in your pocket or resting on the starting blocks. Wait for the app to say "On your marks", "Set" and the start on the “gun”. The display will show your reaction time, that is, the time from the “gun” to when you start moving.

The set up allows you change the time between the commands and also add a random variation so you can’t guess the starter and get a flyer.

Jimson Lee

I am a Masters Athlete and Coach currently based in London UK. My other projects include the Bud Winter Foundation, writer for the IAAF New Studies in Athletics Journal (NSA) and a member of the Track & Field Writers of America.

I have been thinking about that a lot and really would like it to happen. The problem is that wifi is seldom available outdoors on a sports field. 3G/Internet has too many delays that make the timing unreliable. Bluetooth can handle iPhone to iPhone communication, but the range is to short.

I have some other ideas, but so far they have lead to rather clumsy solutions. But I will continue to think about it :)

Otherwise a primitive, but working solution that many use, is conventional start gun, a cheap walkie talkie and the sound detection in sprintTimer.

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Online since 2002, with the addition of the Blog in 2007, SpeedEndurance.com is the book I never wrote with 2000+ articles.
I am a former 200m/400m sprinter, a Masters Athlete and Coach, who has lived in Canada, US, Italy, and now resides in London UK. My other projects include the Bud Winter Foundation, writer for the IAAF New Studies in Athletics Journal (NSA), and a member of the Track & Field Writers of America.

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